Tubing elevator for oil wells



Se pt. 20,1927. 1,643,283

' vW. G. BISBEE ET AL TUBING ELEVATOR FOR OIL WELLS Filed March 1 1926,jwezzfor's Wm Mu Patented Sept. 20, 1927.

UNITED STATES 1,643,283 PATENT OFFICE.

WALTER G. BISBEE AND BEN I. HOFFMAN, 0F BRISTOW, OKLAHOMA.

TUBING ELEVATOR FOR OIL WELLS.

Application filed March 11, 1926. Serial No. 94,093.

The invention relates to a device for use in connection with oil wells,by means of which tubing, casing and the like may be withdrawn from thewell, the device including a tubular elevator with automatic jawactuating means which, when assembled, provides a collar which engagescompletely below a flange whereby the weight is sup-- ported at all thestructure.

More specifically, the invention includes a body portion substantiallysemi-circular in construction and two pivoted jaw members, each insubstance extending substantially 90 of an annulus of which the bodyforms a part. By this arrangement the jaws, when swung in closedposition, create a cylindrical supporting element.

Reference will be had to the accompanying drawings forming a part ofthis specification and wherein like characters of reference designatecorresponding parts through out the several views, in which Fig. 1 is aperspective view showing the jaws in open position;

Fig. 2 is a similar view showing the jaws in closed position;

Fig. 3 is a top plan view with the bale or supporting element cut awayand the jaws in open position, and

Fig. 4. is a view similar to Fig. 3 with the jaws in closed position.

The elevator structure as shown includes a body member 8 and two pivotedjaws 1 and 2 which, when in closed position, form a cylindrical supportcapable of encircling a casing and designed to be positioned below aflange on the casing whereby the latter may be elevated. The body member3, which includes substantially one-half of the cylindrical assembly, isnotched or cut away at its upper and lower edges 4 and 5 adjacent thelongitudinal faces 6. These cut-out portions are adapted to form seatsfor the curved extensions 7 and 8 of the jaws 1 and 2. The pins 9 extendthrough the extensions 7 and 8 and through the portions of the body 3between the cut-out portions 4 and 5, whereby a hinged assembly isprovided at these two points. A bale 10 is connected at this extremityto the pins 9 and provides means for connection to suitable hoistingmachinery. A pivoted lock 11 is attached to the jaw 1 and is adapted tobe swung points of the circumference of into closed position beyond thefastener 12.

A releasing lever 14 is provided for moving the jaws 1 and 2, the otherhalf. The jaws 1 and 2 are provided with extensions 7 and 8 j which, dueto their curved structure and the position of the pivot pins 9, adjacentthe outer longitudinal edges of the body member, swing inwardly withinthe body of the cylinder when inv the open position. This uniquepositioning of the extensions 7 and 8 within the body of the cylinderwhen the jaws are in their open position, operates to provide automaticactuating means for the jaws in that as the jaw extensions engage atubing section ;or other body, the jaws will be swung inwardly on theirpivot and will embrace the tubing. When the jaws are in i closedposition and secured by the lock 11 and 12 or by other suitable lockingmecha-.

nism, a substantially solid tube is provided, capable of withstandingunusual stress and strain and properly constructed to openly distributeany weight. Particular attention is called to the fact that the closedelevator is without projections or irregular surfaces of any kind, alljointsbeing flush,

What we claim as new and useful, and desire to secure by Letters Patent,is

1. In a tubing elevator including a body portion formed with upperand-lowercut-out portions, a pair of pivoted jaw members having curvedextensions adaptedto seat on said cut-out portions, and a bale carrierhaving pivot pins extending through said extensions and through saidbody.

2. The substance of claim1 characterizedin that the body member and thejaws are.

WALTER G. BISBEE. BEN. P. HOFFMAN.

